EP0992743B1 - Gaskessel mit Mitteln für die Speicherung und Warmhaltung von Brauchwasser - Google Patents

Gaskessel mit Mitteln für die Speicherung und Warmhaltung von Brauchwasser Download PDF

Info

Publication number
EP0992743B1
EP0992743B1 EP99107878A EP99107878A EP0992743B1 EP 0992743 B1 EP0992743 B1 EP 0992743B1 EP 99107878 A EP99107878 A EP 99107878A EP 99107878 A EP99107878 A EP 99107878A EP 0992743 B1 EP0992743 B1 EP 0992743B1
Authority
EP
European Patent Office
Prior art keywords
water
boiler
circuit
temperature
expansion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99107878A
Other languages
English (en)
French (fr)
Other versions
EP0992743A3 (de
EP0992743A2 (de
Inventor
Livio Baggio
Lamberto Del Grosso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baxi SpA
Original Assignee
Baxi SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baxi SpA filed Critical Baxi SpA
Publication of EP0992743A2 publication Critical patent/EP0992743A2/de
Publication of EP0992743A3 publication Critical patent/EP0992743A3/de
Application granted granted Critical
Publication of EP0992743B1 publication Critical patent/EP0992743B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1016—Tanks having a bladder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
    • F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
    • F24D3/1041—Flow-through
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/50—Water heaters for central heating incorporating heaters for domestic water incorporating domestic water tanks

Definitions

  • This invention relates to a boiler for hot water production in accordance with the pre-characterising part of the main claim.
  • the boiler when the user requires hot water to circulate through the secondary hydraulic circuit of the boiler, ie through the circuit for water for domestic use, the boiler has first to heat the water present in the primary circuit (ie in the circuit for supplying heating water), so that the water heated in this manner heats water for domestic use on passing through the second boiler heat exchanger, which is generally a plate heat exchanger.
  • a object of this invention is to provide a boiler for producing hot water for domestic use and for heating, which ensures immediate availability and stable delivery of hot water for domestic use, without the need to provide bulky additional components and/or components involving additional heating elements.
  • a further object is to provide a boiler with a time and cost of assembly comparable to those of traditional boilers and which does not require additional maintenance.
  • a boiler comprises a first hydraulic circuit 1, or primary circuit, containing a pump 2, a first heat exchanger 3 for heating the water circulating through the circuit, a three-way valve 4 and a second heat exchanger 25 for transferring heat to the water circulating through a second hydraulic circuit 5.
  • the primary circuit 1 is connected to a heating system via a return pipe 6 and an exit or delivery pipe 7.
  • Water for domestic use circulates through the second circuit, on passing through the second heat exchanger 25 it being heated as required.
  • This second circuit comprises a delivery pipe 5B and a return pipe 5B.
  • the boiler also comprises usual safety members 8, 9, 11, 12 and a safety valve 10, known flue gas conveying and control means 13, and regulator means 14 for a gas flow fed through a pipe 15 to a known burner 16.
  • the boiler also comprises a usual control unit (not shown) for the boiler operation. This unit is connected to and controls all the internal members of the boiler.
  • the boiler also comprises a member 17 acting simultaneously as an expansion tank and as an accumulation vessel for hot water of the primary circuit.
  • the expansion and accumulation member 17 comprises ( Figure 2) a shell 18 of substantially parallelepiped shape, defining an internal space divided into two parts 18A, 18B by an elastically deformable element 19 (formed for example of an elastomer) provided within the shell 18 and having for example the shape of an inverted jug.
  • the shell 18 comprises upperly a through hole 24A sealed by a plug 24 and lowerly a tubular connector 20 arranged to close a shell aperture on which this connector is positioned, and to sealedly retain the edges of the elastic element 19 against the edges of said aperture.
  • the connector 20 is advantageously connected to the edge of the shell 18 by seaming.
  • the tubular element 20 comprises a water inlet aperture 20A and an outlet aperture 20B.
  • the tubular element 21 is connected to a tubular element 21 inserted into the elastic element 19 and dimensioned such that its upper end 21A is positioned in correspondence with the upper portion S of the elastic element when this contains water at ambient temperature ( Figure 2).
  • the tubular element 21 comprises a plurality of holes 22.
  • a probe 23 of conventional type is provided within the tubular element to measure the temperature of the water contained in the element 19. The signal obtained by the probe is transmitted to the outside (to the aforesaid control unit) via a cable 23A.
  • the probe could also be positioned within the space between the elastic element 19 and the tubular element 21 (as shown by dashed lines in Figure 2). Alternatively, the temperature of said water can be measured by the control unit in another manner, for example indirectly via a probe measuring the temperature of the shell 18.
  • the outlet 20B of the expansion and accumulation member 17 is connected to the pump 2, the inlet 20A being connected to a connection pipe connected both to the heating water inlet pipe 6 and to the outlet of the second heat exchanger 25.
  • the conventional expansion members already present in known boilers can be advantageously used.
  • such members are totally identical to that shown in Figure 2 with regard to the shell 18 and the elastic element 19, so that commercially available shells and elements can be used for its construction.
  • known expansion members have a different lower connection and closure element from the aforedescribed (with only one aperture acting both as inlet and outlet for the water provided in the elastic element) and may not possess the tubular element 21 or the temperature measurement probe 23.
  • the expansion members are connected to the inlet or outlet branch of the second heat exchanger 25.
  • the known expansion members are arranged to automatically adjust the water pressure in the primary circuit as its temperature varies.
  • the chamber 18A of the shell 18 is filled through the hole 24A with a gas (inert, for example nitrogen) at a determined pressure (for example at a pressure of 1 bar) whereas the elastic element, being connected to the primary hydraulic circuit of the boiler, is filled with water at ambient temperature. Under these conditions the elastic element fills until the pressure in its interior equals the pressure within the remaining part of the chamber (under such conditions the elastic element generally occupies a space equal to that indicated in Figure 2).
  • the volume of the elastic element increases, and simultaneously the gas present in the chamber 18A is compressed until a new equilibrium situation is attained (when the water in the elastic element is at its maximum temperature, this element can for example have the shape indicated by the dashed line M in Figure 2).
  • the aforedescribed type of operation is usual in known boilers and is in no way altered by the expansion and accumulation member of the invention.
  • the elastic element 19 is however also used for accumulating hot water to be used for the initial heating of the water of the secondary circuit 5 in the heat exchanger 25.
  • the unit controlling the various boiler components operates the three-way valve 4 to close the flow of water from the primary circuit to the outlet pipe 7 and instead direct it to the heat exchanger 25, and activates the pump 2 and burner 16.
  • the water of the primary circuit is heated until the probe 23 inserted in the elastic element 19 senses the attainment of a predetermined temperature (for example 55°C).
  • the second heat exchanger 25 does not operate as a heat exchanger but simply as a passive element for connecting the valve 4 to the expansion and accumulation member 17.
  • a dedicated pipe and valve could also be provided for this purpose.
  • the boiler control unit operates the burner 16 at reduced power to prevent stressing of the primary hydraulic circuit 1 which has a reduced capacity, so preventing overheating.
  • the control unit detects a request for hot water for domestic use (this being usually detected by the member 9 which feeds a signal to the control unit), with the boiler of the invention under normal operating conditions the expansion and accumulation member 17 contains a quantity of hot water sufficient to provide immediate heating of the water for domestic use circulating through the circuit 5.
  • control unit when the control unit receives a signal relative to a request for hot water, this unit, as also happens in known boilers, activates the pump 11 and burner 16, and closes the valve 4 so that the water of the circuit 1, taken from the member 17, circulates towards the heat exchanger 25 and not towards the pipe 7.
  • this unit it is no longer necessary to wait for the water of the primary circuit 1 to heat up before transferring heat via the heat exchanger 25 to the water circulating through the domestic circuit 5.
  • hot water is immediately available, with corresponding immediate heat transfer between the water of the primary circuit 1 and the water of the secondary circuit 5.
  • the holes 22 present in the tubular element 22 have proved of particular use when hot water for domestic use is requested but the accumulated water in the element 19 is at a low temperature, close to the limiting temperature measured by the probe 23. Under these conditions the expansion and accumulation member feeds the heat exchanger 25 with water able to transfer a limited quantity of heat to the water for domestic use. Moreover in this situation if the holes 22 were absent, the water volume present in the elastic element 19 would slow down the heating of the water. However the holes 22 enable the water volume present in the elastic element to be by-passed; most of the water to be heated by the burner 16 follows the path indicated by the arrow F. Hence even under said critical conditions the water for domestic use is heated rapidly.
  • the boiler of the invention achieves the same results as known boilers comprising an additional hot water accumulation vessel and additional means for heating the water present in the vessel, without the need to use a greater number of components and without varying the overall size compared with traditional boilers without hot water accumulation.
  • the aforedescribed expansion and accumulation member 17 does not require insulation.
  • the air present in the part 18A of the shell 18 provides sufficient insulation.
  • control unit of the boiler according to the invention has not been described as it is of conventional type to the expert of the art.
  • the expansion and accumulation member 17 could be provided in another position of the circuit 1, for example upstream of the heat exchanger 25, or the elastic element 19 could be formed differently from that shown.
  • the element 19 has the form of a flat membrane to sealedly separate the chamber into two parts of variable volume, one for water and the other for pressurized gas.
  • FIG. 3 Such an embodiment is shown in Figures 3, 4 and 5 (where parts corresponding to those of Figures 1 and 2 are indicated by the same reference numerals) in which the member 17 comprises an element 19 in the form of a flat membrane, as stated.
  • this membrane rests substantially on a rigid baffle 33 which divides the internal space of the shell 18 into two chambers 18A, 18B of predefined volume when the water in the chamber 18B is at low temperature.
  • the baffle 33 comprises holes 34 enabling the water of the chamber 18B to displace the membrane 19 within the chamber 18A when said water heats up, so increasing its pressure.
  • the member 17 shown in Figures 3, 4 and 5 enables the boiler to operate as already described in relation to Figures 1 and 2, while enabling a minimum volume of water (for example 2 litres) to be always maintained in this member when at relatively low temperature.
  • These pipes can be positioned at opposite ends 17A and 17B of the member 17 or (as in Figure 4) on the same side or end (for example 17A) of this latter.
  • the outlet 20B is connected to and communicates with the tubular element 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Air Humidification (AREA)
  • Cookers (AREA)
  • Commercial Cooking Devices (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Claims (9)

  1. Kessel, um heißes Wasser zum Heizen und für den häuslichen Gebrauch zu erzeugen, von dem Typ, der einen ersten Hydraulik-Schaltkreis (1) zum Erhitzen des Wassers, das für ein Heizsystem bestimmt ist, wobei der erste Schaltkreis Einrichtungen (2) für die erzwungene Zirkulation des Wassers durch den ersten Schaltkreis aufweist, erste Einrichtungen (3, 16) zum Erzeugen von Hitze und zum Übertragen der Hitze auf das Wasser, Ventileinrichtungen (4), um das erhitzte Wassers zu einem Zuführrohr (7) oder zu zweiten Wärmetauschereinrichtungen (25) zu leiten, die dazu ausgestaltet sind, um zumindest einen Teil der Hitze des erhitzten Wassers auf das Wasser für den häuslichen Gebrauch zu übertragen, das durch einen zweiten Hydraulik-Schaltkreis (5) zirkuliert, Einrichtungen zum automatischen Einstellen des Drucks des Wassers, das durch den ersten Schaltkreis zirkuliert, wenn dessen Temperatur variiert, und Einrichtungen zum Akkumulieren und zum Beibehalten einer vorbestimmten Menge an erhitztem Wasser in dem ersten Schaltkreis innerhalb eines vorbestimmten Temperaturbereichs aufeist, wobei die Einrichtungen zum Akkumulieren und Beibehalten mit dem ersten Schaltkreis in einer solchen Weise verbunden sind, um die vorbestimmte Menge an erhitztem Wasser zumindest während einer anfänglichen Stufe beim Erhitzen des Wassers für den häuslichen Gebrauch, das durch den zweiten Schaltkreis zirkuliert, den zweiten Wärmetauschereinrichtungen (25) verfügbar zu machen, wobei Einrichtungen vorgesehen sind, um die operativen Komponenten des Kessels zu steuern, wobei die Einrichtungen zum Akkumulieren und Beibehalten einer Menge an erhitztem Wasser, das den zweiten Wärmetauschereinrichtungen (25) verfügbar gemacht werden soll, die Expansionseinrichtungen (17) sind, wobei Einrichtungen zum Messen der Temperatur des Wassers, das sich in den Expansionseinrichtungen befindet, vorgesehen sind, wobei die Messeinrichtungen mit den Steuereinrichtungen verbunden sind, die auf Basis der gemessenen Temperatur des Wassers, das sich in den Expansionseinrichtungen (17) befindet, auf den ersten Hydraulik-Schaltkreis (1) wirken, um diese Temperatur bei einem vorbestimmten Wert zu halten, bei dem die Wärmeübertragung auf das Wasser für den häuslichen Gebrauch während der anfänglichen Stufe von dessen Erhitzen wirksam erfolgen kann, wobei die Expansionseinrichtungen (17) eine hohle Schale (18) und ein elastisch verformbares Element (19) aufweist, das dazu ausgestaltet ist, um den inneren Raum, der durch die Schale definiert ist, in zwei Teile (18A, 18B) zu unterteilen, die abgedichtet voneinander getrennt sind, wobei ein geschlossener erster Teil (18A) mit einem unter Druck stehenden Gas gefüllt ist, der zweite Teil (18B) mit dem ersten Hydraulik-Schaltkreis (1) verbunden und gegen die Wirkung des unter Druck stehenden Gases durch das Wasser von dem ersten Schaltkreis befüllbar ist, wobei der zweite Teil (18B) eine Wasser-Einlassöffnung (20A) und eine Auslassöffnung (20B) aufweist und die Wassertemperatur-Messeinrichtungen (23) beinhaltet, wohingegen das elastisch verformbare Element (19) die Form von einer im wesentlichen flachen Membran hat, dadurch gekennzeichnet, dass die beiden Kammern (18A, 18B) der hohlen Schale (18) der Expansionseinrichtungen (17) durch eine starre Leitplatte (33) getrennt sind, die mit Öffnungen (34) versehen ist, wodurch die Kammern (18A, 18B) miteinander verbunden sind, dass in der Kammer (18A), die mit Gas gefüllt ist, das verformbare Element (19) angeordnet ist, das dann, wenn die Temperatur des Wassers in der anderen Kammer (18B) niedrig ist, an zumindest einem Teil der Leitplatte (33) anliegt, und das dann, wenn die Temperatur ansteigt, in die Kammer (18A) expandiert, um sich von der Platte (33) zu lösen.
  2. Kessel nach Anspruch 1, dadurch gekennzeichnet, dass die Expansionseinrichtungen (17) durch Zirkulationseinrichtungen (20) mit dem ersten Hydraulik-Schaltkreis (1) so verbunden sind, um zu ermöglichen, dass sich das Wasser, das darin enthalten ist, von und zu dem Schaltkreis (1) bewegt, und um zu ermöglichen, dass sie auch als Akkumulationseinrichtungen verwendet werden können.
  3. Kessel nach Anspruch 1, dadurch gekennzeichnet, dass das elastisch verformbare Element (19) die Form von einem invertierten Wanne hat.
  4. Kessel nach Anspruch 1, dadurch gekennzeichnet, dass die Einlassöffnung (20A) mit der Basis von dem zweiten Teil (18B) verbunden ist, das Wasser enthält, und dass die Auslassöffnung (20B) mit einem oberen Bereich von dem zweiten Teil (18B) verbunden ist.
  5. Kessel nach Anspruch 4, dadurch gekennzeichnet, dass dieser ein Element (21) aufweist, durch das die Wasser-Auslassöffnung (20B) mit dem oberen Bereich von dem zweiten Teil (18B) verbunden ist und das dazu ausgestaltet ist, um zu ermöglichen, dass Wasser, das von der Basis des zweiten Teils eintritt, nur ausströmt, nachdem es den oberen Bereich von dem zweiten Teil erreicht hat.
  6. Kessel nach Anspruch 5, dadurch gekennzeichnet, dass das Verbindungselement (21) eine Vielzahl von Durchgangslöchern (22) aufweist, die in Beziehung mit der Basis von dem zweiten Teil (18B) angeordnet und dazu ausgestaltet sind, um zu ermöglichen, dass zumindest ein Teil von dem Wasser, das in das zweite Teil eintritt, unmittelbar aus dem zweiten Teil ausströmt.
  7. Kessel nach Anspruch 1, dadurch gekennzeichnet, dass die Expansions- und Akkumulationseinrichtungen (17) zwischen den zweiten Wärmetauschereinrichtungen (25) und den Einrichtungen (2) für die erzwungenen Zirkulation des Wassers angeordnet sind.
  8. Kessel nach Anspruch 1, dadurch gekennzeichnet, dass die Temperatur-Messeinrichtungen eine Temperatur-Sonde (23) aufweisen, die sich innerhalb der Expansionseinrichtungen (18) befindet.
  9. Kessel nach Anspruch 1, dadurch gekennzeichnet, dass die Temperatur-Messeinrichtungen eine Sonde aufweisen, die die Temperatur der hohlen Schale (1) der Expansionseinrichtungen misst.
EP99107878A 1998-10-09 1999-04-21 Gaskessel mit Mitteln für die Speicherung und Warmhaltung von Brauchwasser Expired - Lifetime EP0992743B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998MI002179A IT1302641B1 (it) 1998-10-09 1998-10-09 Caldaia a gas con mezzi di accumulo e mantenimento di acqua riscaldataper uso sanitario
ITMI982179 1998-10-09

Publications (3)

Publication Number Publication Date
EP0992743A2 EP0992743A2 (de) 2000-04-12
EP0992743A3 EP0992743A3 (de) 2002-08-14
EP0992743B1 true EP0992743B1 (de) 2004-12-08

Family

ID=11380844

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99107878A Expired - Lifetime EP0992743B1 (de) 1998-10-09 1999-04-21 Gaskessel mit Mitteln für die Speicherung und Warmhaltung von Brauchwasser

Country Status (5)

Country Link
EP (1) EP0992743B1 (de)
AT (1) ATE284521T1 (de)
DE (1) DE69922463D1 (de)
IT (1) IT1302641B1 (de)
TR (1) TR199902491A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106594843A (zh) * 2016-12-30 2017-04-26 何宗衡 竖置式混能自平衡装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2361295A (en) * 2000-03-13 2001-10-17 Hong Kong And China Gas Co Ltd Water heating apparatus
GB2555425B (en) * 2016-10-26 2019-06-26 Vexo International Uk Ltd Expansion vessel for a heating or cooling system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8721090D0 (en) * 1987-09-08 1987-10-14 Pressure Units Ltd Central heating system
AT398831B (de) * 1990-12-10 1995-02-27 Vaillant Gmbh Heizeinrichtung mit einem primärwärmetauscher
IT1271673B (it) * 1994-07-15 1997-06-04 Integra Srl Caldaia in particolare del tipo cosiddetto combinato a rapida erogazione di acqua calda sanitaria
DE19601179A1 (de) * 1996-01-15 1997-07-24 Bosch Gmbh Robert Einrichtung zum Erhitzen von umlaufendem Heizungswasser und Brauchwasser
GB2335029B (en) * 1998-03-07 2001-11-28 Baxi Heating Ltd Hot water expansion vessel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106594843A (zh) * 2016-12-30 2017-04-26 何宗衡 竖置式混能自平衡装置
CN106594843B (zh) * 2016-12-30 2022-05-13 何宗衡 竖置式混能自平衡装置

Also Published As

Publication number Publication date
DE69922463D1 (de) 2005-01-13
EP0992743A3 (de) 2002-08-14
TR199902491A3 (tr) 2000-05-22
IT1302641B1 (it) 2000-09-29
ITMI982179A1 (it) 2000-04-10
EP0992743A2 (de) 2000-04-12
TR199902491A2 (xx) 2000-05-22
ATE284521T1 (de) 2004-12-15

Similar Documents

Publication Publication Date Title
EP0015884B1 (de) Heisswassererzeuger
US7644686B2 (en) Water heating distribution system
EP1026306B1 (de) Dampferzeuger für Reinigungsmaschinen, Bügeleisen, Kaffemaschinen und ähnliche Maschinen
US4638944A (en) Compact high volume point of use instantaneous water heating system
EP0992743B1 (de) Gaskessel mit Mitteln für die Speicherung und Warmhaltung von Brauchwasser
US3672444A (en) Water heating system
US4850427A (en) Device for controlling overheating and scaling in an apparatus for heating a fluid and apparatus equipped with such a device
EP0692682B1 (de) Kesselvorrichtung, insbesondere Kombikessel mit unmittelbarer Abgabe von heissem Brauchwasser
FR2733822B1 (fr) Module de distribution pour installation de chauffage central avec plancher chauffant et radiateurs
US4248378A (en) Self priming devices for indirect domestic water heating systems
EP0940636B1 (de) Kombikessel zum Heizen und zur Brauchwasserbereitung
KR960004846B1 (ko) 개량된 온수탱크 및 이러한 탱크가 장비된 장치
EP1028293A1 (de) Wärmetausch- und Speichereinheit für Wasserheizer, Verfahren zu deren Herstellung und Wasserheizer mit so einer Einheit
US5033673A (en) Hot water circulating system
SU1053070A1 (ru) Устройство дл регулировани уровн конденсата в паровод ных подогревател х
GB2153503A (en) Water heating apparatus
JP2808054B2 (ja) 加熱冷却装置
RU2080782C1 (ru) Устройство для поения животных
GB2153505A (en) Water heating apparatus
GB2195172A (en) Hot water containers; self- priming of primary water system
GB9313273D0 (en) Boilers
JPH0351661A (ja) 湯沸器
CS267854B1 (cs) Parní kotel s oběhovým čerpadlem
EP0014279B1 (de) Selbstfüllvorrichtungen für indirekte Gebrauchswasserheizungssysteme und die Verwendung solcher Vorrichtungen
JP2813325B2 (ja) 温水ボイラー

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RIC1 Information provided on ipc code assigned before grant

Free format text: 7F 24H 1/50 A, 7F 24D 3/10 B, 7F 24H 1/52 B, 7F 24H 1/48 B, 7F 24D 3/08 B

AKX Designation fees paid
17P Request for examination filed

Effective date: 20030331

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH CY DE DK LI

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

17Q First examination report despatched

Effective date: 20030519

RBV Designated contracting states (corrected)

Designated state(s): AT BE DE ES FR IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE DE ES FR IT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041208

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041208

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69922463

Country of ref document: DE

Date of ref document: 20050113

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050309

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050319

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20050909

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20180425

Year of fee payment: 20

Ref country code: IT

Payment date: 20180327

Year of fee payment: 20